B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means

B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable

B23B31/1207—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis

B23B31/123—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis with locking arrangements

Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC

Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

Y10T279/00—Chucks or sockets

Y10T279/17—Socket type

Y10T279/17615—Obliquely guided reciprocating jaws

Y10T279/17623—Threaded sleeve and jaw

Y10T279/17632—Conical sleeve

Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC

Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

Y10T279/00—Chucks or sockets

Y10T279/34—Accessory or component

Y10T279/3431—Chuck key

Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC

Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

Y10T408/00—Cutting by use of rotating axially moving tool

Y10T408/94—Tool-support

Y10T408/95—Tool-support with tool-retaining means

Y10T408/953—Clamping jaws

Description

Translated from Japanese

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はドリル等の工具用チャックに関するものである。 Description of the Invention The present invention [relates] is related to chuck for a tool such as a drill.

第10図は従来構造を示し、チャック本体１に複数個この場合３個のジョー２を放射状に設け、該ジョー２を回動ナット３の回動により互いの螺合作用で拡縮傾斜摺動可能に構成したものである。 FIG. 10 shows a conventional structure, provided a plurality this case three jaws 2 to the chuck body 1 radially scaling tiltable slide the jaw 2 by the rotation of the rotating nut 3 in the meshing operation of each other it is those that you have configured.

ところで上記従来構造の場合回動ナット３の回動はチャック本体１に着脱可能な傘歯車構造のハンドルａにより行うが、近時作業の高速化に伴い、ハンドルａを使用せずに作業者の手で直接回動ナット３を回動するものが要求されている。 Incidentally the case rotation of the rotary nut 3 having the conventional structure performed by the handle a removable bevel gear structure on the chuck body 1, but with the speed of recent work, the operator without using the handle a which rotate directly rotating nut 3 by hand is required.

〔発明が解決しようとする問題点〕 [Problems to be Solved by the Invention]

しかしながら、上記従来構造の場合ハンドルａを使用せずに回動ナット３を回動すると、ジョー２を備えたチャック本体１が一緒に回動し、回動ナット３を強く締め付け回動することができず、また強く締まった場合回動ナット３を緩め回動できないことがあるという不都合を有している。 However, when rotating the rotating nut 3 without using the case handle a of the conventional structure, the chuck body 1 having a jaw 2 rotates together, it is strongly tightened rotating the rotating nut 3 It has the disadvantage that can not, and if it may not be rotated to loosen the turning nut 3 tightened strongly.

〔問題点を解決するための手段〕 [Means for Solving the Problems]

添付図面を参照して本発明の要旨を説明する。 With reference to the accompanying drawings illustrating the gist of the present invention.

チャック本体１に複数個のジョー２を設け、該ジョー２ A plurality of jaws 2 provided on the chuck body 1, the jaw 2を回動ナット３の回動により互いの螺合作用で拡縮傾斜摺動可能にした工具用チャックにおいて、上記チャック本体１の後端側に握持環12をチャック本体１と回り止め状態に設け、握持環12の前側に締付ナット14をチャック本体１に螺着し、チャック本体１の前側外周面とチャック本体の後側に螺着した締付ナット14の外周面との間に操作筒７を回動可能に被嵌し、この操作筒７の前部内側段面と回動ナット３の前端面との間に回動力を強くすると係止状態が解除される弾圧係止機構18を設け、操作筒７の内周面後側に固定環17を突出状態に設け、この固定環17の前側と回動ナット３の背側との間にベアリング体 In tool chuck in which the enabling scaling inclined sliding by rotation of the rotary nut 3 in the meshing operation of each other, providing a gripping ring 12 in the chuck body 1 and the detent state on the rear end side of the chuck body 1 the clamping nut 14 on the front side of the gripping ring 12 is screwed to the chuck body 1, the operation between the outer peripheral surface of the clamping nut 14 which is screwed to the rear side of the front outer peripheral surface and the chuck body of the chuck body 1 the cylinder 7 rotatably fitted over, repression locking mechanism 18 locked state is released when strong rotational force between the front end surface of the front inner step surface and the pivot nut 3 of the control cylinder 7 the provided a fixed ring 17 on the inner circumferential surface rear side of the operating cylinder 7 is provided in the projecting state, the bearing body between the back side of the front and the pivot nut 3 of the fixed ring 1711を介在せしめ、固定環17の後側と締付ナット14の前側とを当接せしめ、回動ナット３の前端面とチャック本体１の対向段面との間に小間隙Ｒを設けたことを特徴とする工具用チャックに係るものである。 11 allowed interposed, brought into contact with the front side and a tightening nut 14 after the fixed ring 17, the provision of the small clearance R between the front end surface and the opposing step surface of the chuck body 1 of the rotating nut 3 those of the tool chuck according to claim.

チャック本体１に複数個のジョー２を設け、該ジョー２ A plurality of jaws 2 provided on the chuck body 1, the jaw 2を回動ナット３の回動により互いの螺合作用で拡縮摺動可能にした工具用チャックにおいて、上記チャック本体１の後端側に握持環12をチャック本体１と回り止め状態に設け、チャック本体１の前端外周面に操作筒７を回動可能に設け、この操作筒７と回動ナット３が共動するように回動ナット３を操作筒７と一体的に設け、チャック本体１の前側外周面と回動ナット３の前側内周面との間にベアリング体11を介在せしめたことを特徴とする工具用チャックに係るものである。 The in tool chuck enables scaling sliding by rotation of the rotary nut 3 in the meshing operation of each other, providing a gripping ring 12 on the rear end side of the chuck body 1 to the chuck body 1 and the detent state, the operation tube 7 to the front end outer peripheral surface of the chuck body 1 provided rotatably, provided the rotation nut 3 so that the control cylinder 7 and the turning the nut 3 cooperates control cylinder 7 and integrally with the chuck body 1 those of the tool chuck, characterized in that it allowed interposing a bearing 11 between the front outer peripheral surface and the front inner peripheral surface of the rotating nut 3.

〔作用〕 [Action]

第１発明の作用を説明する。 A description will be given of the operation of the first invention.

握持環12をもって操作筒７を一方向に回動すると弾圧係止機構18の係止作用により回動ナット３が回動し、この回動ナット３の回動でジョー２は縮小傾斜摺動し、ジョー２により工具Ｃを圧縮する。 Is rotated the nut 3 rotates by the locking action of repression locking mechanism 18 and rotates with a gripping ring 12 and control cylinder 7 in one direction, the jaws 2 with the rotation of the rotating nut 3 is reduced inclined sliding and, compressing the tool C through jaws 2.更に操作筒７を同方向に回動すると弾圧係止機構18の弾圧係止が解除され、回動ナット３が静止したまま操作筒７が回動し、回動ナット３は弾圧力により後退し、ベアリング体11は後方に押圧され、固定環17の後側面17aは締付ナット14の外周面前側面14aに圧接し、この圧接作用により固定環17と一緒に締付ナット14は回動しつつ前進し、固定環17とベアリング体11を介して回動ナット３は回動ナツト３の前端面とチャック本体１の対向段面との間に介在された小間隙Ｒにより押圧前進し、ジョー２も前進して工具Ｃを一層強固に圧縮する。 Further repression lock is released control cylinder 7 in the same direction to rotate the repression locking mechanism 18, control cylinder 7 rotating nut 3 remains stationary pivots, rotates the nut 3 is retracted by elastic pressure force bearing member 11 is pressed to the rear, side 17a after the stationary ring 17 is pressed against the outer periphery presence side 14a of the clamping nut 14, tightening the nut 14 with the stationary ring 17 by the pressing action while rotating forward and presses forward by the small gap R which is interposed between the rotating nut 3 the front surface and the opposing step surface of the chuck body 1 of the rotating nut 3 through the stationary ring 17 and the bearing member 11, the jaws 2 more firmly to compress the tool C is also moving forward.

また、握持環12をもって操作筒７を逆回動すると解除されていた弾圧係止機構18が再び係合し、回動ナット３の後方への押圧力が弱まるから締付ナット14は逆回動しつつ後退し、ジョー２による工具Ｃの圧接作用も解かれ、 Furthermore, the control cylinder 7 with a gripping ring 12 repression locking mechanism 18 has been released when the reverse rotation is engaged again, fastening nut 14 from the pressing force toward the rear of the rotating nut 3 weakens opposite times dynamic and retreated while unwound even pressure action of the tool C by the jaws 2,締付ナット14は原位置に復帰し、更なる操作筒７の逆回動により回動ナット３が逆回動し、この回動ナット３の逆回動によりジョー２は拡大傾斜摺動し、工具Ｃを取外しできる。 Fastening nut 14 is returned to the original position, and the reverse rotation rotates the nut 3 by the reverse rotation of the further control cylinder 7, the jaws 2 are enlarged inclined sliding by reverse rotation of the rotating nut 3, You can remove the tool C.

第２発明の作用を説明する。 A description will be given of the operation of the second invention.

握持環12を握って操作筒７を一方向に回動すると回動ナット３が回動し、回動ナット３とジョー２との螺合作用でジョー２は縮小前進傾斜摺動し、ジョー２により工具Ｃを圧縮することができる。 Gripping the gripping ring 12 rotates the nut 3 is rotated when rotating the control cylinder 7 in one direction, the jaws 2 are reduced forward inclined sliding meshing operation of the pivot nut 3 and the jaw 2, jaws 2 makes it possible to compress the tool C.

第１図乃至第11図は本発明の実施例を示し、第１図乃至第５図は第１実施例、第６図乃至第８図は第２実施例、 Figure 1 through Figure 11 shows an embodiment of the present invention, FIG. 1 through FIG. 5 is a first embodiment, FIG. 6 through FIG. 8 is a second embodiment,第９図は第３実施例を示している。 Figure 9 shows a third embodiment.

尚、前期第11図の従来構造のものと同一態様部分には同符号を付して説明する。 The same aspect parts as those of the conventional structure of the previous period Figure 11 will be denoted by the same reference numerals.

第１発明に係る第１図乃至第５図の第１実施例を説明すると、１は金属製のチャック本体であって、チャック本体１に３個のジョー２を放射状にして拡縮傾斜摺動可能に設け、チャック本体１に前記従来構造と同様に製作後に組付けのため分割した回動ナット３を回動可能に設け、回動ナット３を保形する保形環４を回動ナット３の外周面に嵌着し、回動ナット３の雌ネジ５をジョー２の外周面の雄ネジ６に右ネジの関係で螺合している。 To explain the first embodiment of FIG. 1 to FIG. 5 according to the first invention, 1 is a metallic chuck body 1 to the three jaws 2 scaling tiltable slide with radially in providing, the pivot nut 3 divided for assembly after the similarly manufactured in the conventional structure in the chuck body 1 rotatably provided, a shape retaining ring 4 to shape retention of the pivot nut 3 rotating nut 3 fitted on the outer peripheral surface is screwed in relation to right-hand thread the female screw 5 of the rotating nut 3 to the male screw 6 of the outer peripheral surface of the jaw 2.

14は締付ナットであって、締付ナット14の雌ネジ15をチャック本体１の雄ネジ16に左ネジの関係で螺着している。 14 is a tightening nut, is screwed in relation to the left screw the female screw 15 of the clamping nut 14 to the male screw 16 of the chuck body 1.

12は握持環であって、チャック本体１に回り止め固定され、外周面に凹部13を形成している。 12 is a gripping ring, are detent fixed to the chuck body 1, and a recess 13 on the outer circumferential surface.

７は操作筒であって、チャック本体１の前側外周面とチャック本体１の後側に螺着した締付ナット14の外周面との間に回動可能に設け、操作筒７の外周面に凹部８を設け、チャック本体１の前部の段面1aと回動ナット３の前面との間に小間隙Ｒを設け、操作筒７の内周面後側に固定環17を突設状態に設けている。 7 is a control cylinder, rotatably provided between the outer peripheral surface of the fastening nut 14 screwed on the rear side of the front outer peripheral surface of the chuck body 1 and the chuck body 1, the outer peripheral surface of the control cylinder 7 the recess 8 is provided, in a small clearance R is provided, projecting state fixed ring 17 to the inner circumferential surface rear side of the operating cylinder 7 between the front stage surface 1a and the pivot nut 3 in the front of the chuck body 1 It is provided.

11はベアリング体であって、固定環17と回動ナット３との間に球状のベアリング体11を複数個介在配列している。 11 is a bearing member, and a plurality intervening sequence the spherical bearing member 11 between the stationary ring 17 and the pivot nut 3.

18は弾圧係止機構であって、この場合回動ナット３の前側と操作筒７の前部の段面1aとの間に、対向位置に突部 18 is a repression locking mechanism, between the front stage surface 1a of the front and control cylinder 7 in this case pivot nut 3, projection position facing19を有する板バネ状の弾性リング20を介在し、弾性リング20の２個の舌片21を操作筒７の係合凹溝22に回り止め状態で係止し、回動ナット３の前側面に２個の舌片21が嵌合する係止凹部23を対向形成し、操作筒７の段面1aに 19 by interposing a plate spring-shaped resilient ring 20 having, engaged with two detent state the engagement grooves 22 of the tongue 21 control cylinder 7 of the elastic ring 20, the front side of the rotation nut 3 two locking recesses 23 which tongues 21 fits faces formed, the stepped surface 1a of the control cylinder 7120度の範囲で逃げ凹部24を形成する。 Forming a recess 24 escape in the range of 120 degrees.また、握持環12 In addition, the gripping ring 12と締付ナット14との間に一方端部を握持環12の係止穴25 Retaining holes 25 of the gripping ring 12 to one end portion between the clamping nut 14 andに挿入するとともに他方端部を締付ナット14の係止穴26 Engagement hole 26 of the clamping nut 14 and the other end is inserted intoに挿入したねじりバネ27を介在している。 Is interposed a torsion spring 27 is inserted into.

この第１実施例は上記構成であるから、握持環12をもって操作筒７を一方向に回動すると舌片21と操作筒７の係合凹溝22との係止作用により弾性リング20も一緒に回動し、弾性リング20の突部19と係止凹部23との係合により回動ナット３は回動し、回動ナット３の回動で雌ネジ５ Since this first embodiment is the configuration, the elastic ring 20 by the locking action of the pivots with a gripping ring 12 and control cylinder 7 in one direction and the tongue 21 and the engaging recessed groove 22 of the control cylinder 7 is also rotates together, rotating the nut 3 by the engagement between the projection 19 and the locking recesses 23 of the elastic ring 20 is rotated, the female screw 5 in the rotation of the rotating nut 3と雄ネジ６との右ねじ螺合作用でジョー２は縮小傾斜摺動し、ジョー２は工具Ｃを圧縮する。 Joe 2 shrinks inclined slides for the right screw engaging action between the male thread 6, jaws 2 compresses the tool C.更に操作筒７を同方向に回動すると弾性リング20の突部19は係止凹部23を乗り上げて逃げ凹部24側にたわみ、その反力により回動ナット３は後退し、ベアリング体11は後方に押圧され、 Further, when rotating the control cylinder 7 in the same direction protrusion 19 of the elastic ring 20 flexes in the recesses 24 side escape rides a locking recess 23, rotation nut 3 are retracted by the reaction force thereof, the bearing member 11 at the rear is pressed in,固定環17の後側面17aは締付ナット14の前側面14aに圧接し、この圧接作用により固定環17と一緒に締付ナット14 Side 17a is pressed against the front surface 14a of the clamping nut 14 after the fixed ring 17, the clamping nut 14 with the stationary ring 17 by the pressing actionは回動しつつ前進し、このときねじりバネ27は回動し、 Is advanced while rotating, a spring 27 torsion this time is rotated,固定環17,ベアリング体11を介して小間隙Ｒの存在により回動ナット３は押圧前進し、ジョー２も前進してジョー２により工具Ｃを一層強固に圧縮する。 Stationary ring 17, through the bearing member 11 rotates the nut 3 by the presence of the small gap R pushes forward, the jaw 2 be advanced to be more firmly compress the tool C through jaws 2.

また、握持環12をもって操作筒７を逆回動すると先ず締付ナット14は逆回動しつつ後退し、乗り上げていた突部 Further, when reverse rotating the control cylinder 7 with a gripping ring 12 first tightening nut 14 retreats while reverse rotation was rides projection19は係止凹部23に没入し、固定環17の後側面17aと締付ナット14の前側面14aとの圧接作用が解かれ、ジョー２ 19 is retracted into the engagement recess 23, pressure acting between the front side surface 14a of the side surface 17a and the clamping nut 14 after the fixing ring 17 is released, the jaws 2による工具Ｃの圧接作用も解かれ、ねじりバネ27により締付ナット14は原位置に復帰し、更なる操作筒７の逆回動により突部19と係止凹部23との弾圧係合により回動ナット３が逆回動し、この回動ナット３の逆回動によりジョー２は拡大傾斜摺動し、工具Ｃを取外しできる。 Also solved pressure action of the tool C by a torsion fastening nut 14 is returned to the original position by the spring 27, rotating the repression engagement between projection 19 and the locking recess 23 by the reverse rotation of the further control cylinder 7 the dynamic nut 3 reversely rotated, jaw 2 has expanded inclined sliding by reverse rotation of the rotating nut 3 can be removed tool C.

従って、握持環12をもって操作筒７を正逆方向に回動するだけで回動ナット３及び締付ナット14を順次回動でき、工具Ｃの圧縮釈放動作を円滑にできる。 Accordingly, only by turning the nut 3 and tightening the nut 14 to rotate the control cylinder 7 with a gripping ring 12 in forward and reverse directions sequentially next can dynamically be compression release operation of the tool C smoothly.

このため回動ナット３の締め回動及び弛め回動時にはチャック本体１を握らずに一方の手で握時環12を握り、他方の手で操作筒７を握って回動ナット３の締め回動、弛め回動を確実に行うことができ、また、チャック本体１ Therefore grip the ring 12 when grip with one hand without held to the chuck body 1 at the time of tightening rotation and loosening rotation of the rotating nut 3, tightening of the rotation nut 3 holds the control cylinder 7 by the other hand rotation, can be performed reliably loosened rotation, also, the chuck body 1先端部に握時部分を設ける必要がなく、このため全体の小型化、軽量化を図ることができ、高速回転に最適なものとなる。 It is not necessary to provide a Nigitoki portion to the tip portion, miniaturization of the whole for this, it is possible to reduce the weight, the optimum for high-speed rotation.

尚、操作筒７後部と握時環12との間Ｓに操作筒７を前方付勢するバネを設け、固定環17の後側面17aと締付ナット14の前側面14aとの離反作用を円滑にすることもあり、また後側面17aと前側面14aとの面に摩擦増大要素、 Incidentally, the operation tube 7 between S and control cylinder 7 rear and Nigitoki ring 12 provided with a spring for forwardly biasing, smooth away action of the front side surface 14a of the side surface 17a and the clamping nut 14 after the fixed ring 17 There is also, also friction-increasing elements on the surface of the rear side surface 17a and the front side 14a to a,たとえばフェースラチェットやシュー等を介在することもある。 For example, sometimes intervening the face ratchet and the shoe, or the like.

次に、第６図乃至第８図の第２実施例，第９図の第３実施例，第10図の第４実施例を前記実施例と同一態様部分に同符号を付して説明すると、１は金属製のチャック本体であって、チャック本体１に３個のジョー２を放射状にして拡縮傾斜摺動可能に設け、チャック本体１に製作後に組付けのためＶ状部3aで二分割した回動ナット３を回動可能に設け、回動ナット３を保形する保形環４を回動ナット３の外周面に嵌着し、回動ナット３の雌ネジ５ Next, a second embodiment of Figure 6 through Figure 8, a third embodiment of FIG. 9, when the fourth embodiment of FIG. 10 will be denoted by the same reference numerals to the embodiment of the same aspect parts , 1 is a metallic chuck body, the chuck body 1 three jaws 2 and radially disposed so as to be scaled inclined sliding, bisected by the V-shaped portion 3a for assembly after manufacture in the chuck body 1 provided rotating nut 3 which is rotatably, the shape retaining ring 4 to shape retention of the pivot nut 3 fitted to the outer peripheral surface of the rotary nut 3, the female screw 5 of the rotating nut 3をジョー２の外周部の雄ネジ６に螺合するとともに回動ナット３を樹脂製の操作筒７に圧入固定し、操作筒７の外周面に複数個の凹部８を設け、チャック本体１の後部に握持環12を回り止め固定し、握持環12の外周面に凹部 The pivoting nut 3 is press-fitted into the operation tube 7 made of resin with screwed to the male screw 6 of the outer peripheral portion of the jaw 2, a plurality of recesses 8 provided on the outer peripheral surface of the control cylinder 7, the chuck body 1 the gripping ring 12 and detent fixed to the rear recess on the outer peripheral surface of the gripping ring 1213を形成している。 To form a 13.

11はベアリングであって、チャック本体１の前部外周面に半円弧状の内側凹環溝27を周設し、回動ナット３の前部内周面にも半円弧状の外側凹環溝28を形成市、かつ回動ナット３の外周面に外側凹環溝28に貫通する挿入穴29 11 is a bearing, the chuck body the semicircular inner 凹環 groove 27 provided around the front peripheral surface of the 1, outer 凹環 grooves of semicircular in front inner peripheral surface of the rotating nut 3 28 the formation City, and penetrates to the outer 凹環 groove 28 on the outer peripheral surface of the rotary nut 3 insertion hole 29を形成し、鋼球状の複数個のベアリング体11を挿入穴29 Is formed and inserted a plurality of bearing members 11 of steel spherical bore 29を介して順次挿入して外側凹環溝28と内側凹環溝27との間に繞設し、挿入穴29に離脱防止片30を圧入している。 Sequentially inserted through was Nyo設 between the outer 凹環 groove 28 and the inner 凹環 grooves 27 are press-fitted disengagement prevention piece 30 into the insertion hole 29.

この第２実施例は上記構成であるから、握持環12を握って操作筒７を一方向に回動すると回動ナット３が回動し、回動ナット３とジョー２との螺合作用でジョー２は縮小前進傾斜摺動し、ジョー２により工具Ｃを圧締することができる。 Since this second embodiment is the structure, rotating the nut 3 is rotated when rotating the control cylinder 7 by gripping the gripping ring 12 in one direction, the meshing operation of the pivot nut 3 and the jaw 2 in the jaws 2 can be reduced forward inclined sliding and clamping the tool C through jaws 2.

また握持環12を握って操作筒７を逆回動すると回動ナット３が逆回動し、回動ナット３とジョー２との螺合作用でジョー２は拡大後退傾斜傾動し、工具Ｃを取外しできる。 Further to the reverse rotation is rotated the nut 3 reverse rotating the control cylinder 7 by gripping the gripping ring 12, the jaws 2 are expanded backward inclined tilts the meshing operation of the pivot nut 3 and the jaw 2, the tool C the can be removed.

このため回動ナット３の締め回動及び弛め回動時にはチャック本体１を握らずに一方の手で握持環12を握り、他方の手で操作筒７を握って回動ナット３の締め回動、弛め回動を確実に行うことができ、また、チャック本体１ Therefore it grips the gripping ring 12 with one hand without held to the chuck body 1 at the time of tightening rotation and loosening rotation of the rotating nut 3, tightening of the rotation nut 3 holds the control cylinder 7 by the other hand rotation, can be performed reliably loosened rotation, also, the chuck body 1先端部に握持部分を設ける必要がなく、このため全体の小型化，軽量化を図ることができ、高速回転に最適なものとなる。 It is not necessary to provide a gripping portion to the tip portion, miniaturization of the whole for this, it is possible to reduce the weight, the optimum for high-speed rotation.

この場合ベアリング体11はチャック本体１前側外周面と回動ナット３の前側内周面との間に設けられているため回動ナット３の回動を円滑にでき、特にジョー２により工具Ｃを圧締するとき工具圧締反力をベアリグ体11が受け、工具圧締回動の円滑化を図ることができ、回動ナット３を作業者により容易に回動でき、作業能率を向上できる。 In this case the bearing member 11 can smoothly rotate the rotating nut 3 because it is provided in between the chuck body 1 front outer peripheral surface and the front inner peripheral surface of the rotating nut 3, a particular tool C by the jaws 2 receiving is Bearigu body 11 of the tool clamping reaction force when clamping, can be made smooth tool clamping rotation, it can be easily rotated by the operator to rotate the nut 3, thereby improving the working efficiency.

また、この場合ベアリング体11はチャック本体１の外周面の内側凹環溝27と回動ナット３の内周面の外側凹環溝 The outer 凹環 groove of the inner peripheral surface of the inner 凹環 groove 27 and the rotation nut 3 of the outer peripheral surface of the case bearing member 11 is the chuck body 128との間に設けられているため第10図のように工具圧締反力によりジョー２を介して回動ナット３が矢印方向に押圧されると２個所の接触部Ｐで受けることになり、軸方向及び円周方向の両方向をアンギュラベアリングのように受けることができる。 The tool clamping reaction force as Fig. 10 because it is provided in between the 28 rotating nut 3 through the jaw 2 will be received by the contact portion P of the two points when it is pressed in the direction of the arrow can receive both the axial and circumferential directions as angular bearings.

第９図の第３実施例は前記第２実施例の離脱係止片30の代わりに操作筒７に離脱防止部31を形成するとともに第２実施例の保形環４を後方に延長形成し、保形環４の筒状部17をチェック本体１の中程外周面て支持し得るように構成したものである。 The third embodiment of FIG. 9 is extended form a shape retaining ring 4 in the second embodiment to form a detachment preventing portion 31 in the operating tube 7 instead of leaving retaining pieces 30 of the second embodiment in the rear , which is constituted so as to support the cylindrical portion 17 of Hogatawa 4 Te middle outer circumferential surface of the check body 1.

第10図の第４実施例は第２実施例の保形環４の代わりに操作筒７の内周面に保形部を形成したものである。 Fourth embodiment of FIG. 10 is obtained by forming the shape retaining portion on the inner peripheral surface of the control cylinder 7 in place of the shape retaining ring 4 in the second embodiment.

この第3,4実施例も第２実施例と同様の作用効果を得る。 The third and fourth embodiment also obtain the same effect as the second embodiment.

〔発明の効果〕 〔Effect of the invention〕

第１発明 固定環と締付ナットとでベアリング体を支承しているが、回動ナットの受ける締付反力は回動ナットの背面に設けたベアリング体が支承するから、操作筒に締付反力が伝達されず、ベアリング体，固定環，締付ナットを介して直接チャック本体が支承し、強力に工具を締付することができる。 Since it is supporting the bearing body in the first invention stationary ring and the clamping nut, the reaction force clamping received by the rotating nut bears a bearing body which is provided on the rear surface of the rotating nut, tightening the operation tube reaction force is not transmitted, the bearing member, the fixed ring, directly chuck body through the tightening nut is supported, it is possible to strongly tool to tightening.

更に操作筒と回動ナットとに弾圧係止機構を受けて両者の共動を確実に構成したから操作筒の回動力は確実に回動ナットに伝えられ、工具を締付けしたジョーを更に前進せしめてテーパー締付作用により工具を強固保持し得ることとなる。 Further operating cylinder and the rotating force of the operating tube to cooperate both undergo repression locking mechanism and turning the nut because the reliable arrangement reliably transmitted to rotate the nut, further allowed advancing the jaws were tightened tool so that the tool can be firmly held by the taper clamping action Te.

このため、手動締付タイプであるにも拘わらず小型化， For this reason, miniaturization despite a with manual clamping type,軽量化を図ることができ、高速回転に最適なものとなる。 It is possible to reduce the weight, the optimum for high-speed rotation.

第２発明 ベアリング体の設置位置をチャック本体の前側外周面と回動ナットの前側内周面との間に設けたから回動ナットの回動を円滑にすると同時に締付反力をベアリング体が支承することになり、第１発明と同様な効果を奏することになる。 The second invention bearing member smoothly to the support a reaction force fastening the bearing member at the same time the rotation of the rotating nut from provided between the front outer peripheral surface and the front inner peripheral surface of the rotating nut installation position chuck body It will be, will be exerted first invention and the same effects.

Claims (2)

Translated from Japanese

【特許請求の範囲】 [The claims]

【請求項１】チャック本体１に複数個のジョー２を設け、該ジョー２を回動ナット３の回動により互いの螺合作用で拡縮傾斜摺動可能にした工具用チャックにおいて、上記チャック本体１の後端側に握持環12をチャック本体１と回り止め状態に設け、握持環12の前側に締付ナット14をチャック本体１に螺着し、チャック本体１の前側外周面とチャック本体の後側に螺着した締付ナット14 [Claim 1] a plurality of jaws 2 provided on the chuck body 1, the jaw 2 by the rotation of the rotating nut 3 in chuck tool that enables scaling inclined slide meshing operation of each other, the chuck body the gripping ring 12 to one end side provided on the chuck body 1 and the detent state, the clamping nut 14 to the front side of the gripping ring 12 is screwed to the chuck body 1, the front outer peripheral surface and the chuck of the chuck body 1 tightening nut screwed on the rear side of the body 14の外周面との間に操作筒７を回動可能に被嵌し、この操作筒７の前部内側段面と回動ナット３の前端面との間に回動力を強くすると係止状態が解除される弾圧係止機構 The operation tube 7 between an outer peripheral surface rotatably fitted over the, the locked state when strong rotational force between the front inner step surface and the front end face of the rotation nut 3 of the control cylinder 7 oppression locking mechanism is released18を設け、操作筒７の内周面後側に固定環17を突出状態に設け、この固定環17を前側と回動ナット３の背側との間にベアリング体11を介在せしめ、固定環17の後側と締付ナット14の前側とを当接せしめ、回動ナット３の前端面とチャック本体１の対向段面との間に小間隙Ｒを設けたことを特徴とする工具用チャック。 18 is provided, on the inner circumferential surface rear side of the operating cylinder 7 is provided a fixed ring 17 in the projecting state, brought interposed bearing member 11 between the fixing ring 17 and the back side of the front and the pivot nut 3, the stationary ring 17 contact against a front side and a tightening nut 14 after the chuck tool, characterized in that a small clearance R between the front end surface and the opposing step surface of the chuck body 1 of the rotating nut 3 .

【請求項２】チャック本体１に複数個のジョー２を設け、該ジョー２を回動ナット３の回動により互いの螺合作用で拡縮摺動可能にした工具用チャックにおいて、上記チャック本体１の後端側に握持環12をチャック本体１ 2. A method chuck body 1 to a plurality of jaw 2 is provided, the jaw 2 by the rotation of the rotating nut 3 in the tool chuck which enables scaling slide meshing operation of each other, the chuck body 1 the chuck body 1 at the rear end of gripping ring 12 ofと回り止め状態に設け、チャック本体１の前端外周面に操作筒７を回動可能に設け、この操作筒７と回動ナット３が共動するように回動ナット３を操作筒７と一体的に設け、チャック本体１の前側外周面と回動ナット３の前側内周面との間にベアリング体11を介在せしめたことを特徴とする工具用チャック。 Provided detent state, the control cylinder 7 on the front end outer peripheral surface of the chuck body 1 provided rotatably, together with control cylinder 7 a rotating nut 3 so that the control cylinder 7 and the turning the nut 3 to cooperate manner provided, the tool chuck, characterized in that it allowed interposing a bearing member 11 between the front outer peripheral surface and the front inner peripheral surface of the rotating nut 3 of the chuck body 1.